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ve2mrx
802.11n
Posts: 157
Registered: ‎07-07-2019
Location: CA
Views: 212
Message 31 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

It depends on using the defective part... You could run a system with bad memory for months if you never tickle the bad part.

 

In your system, I would suspect a weak part in the memory path, but it's not easy to troubleshoot. I'd try your memory in a second, identical machine, but that's not something everyone has on hand... Me neither ;-)

 

Maybe running a memory test for 24h continous could help, but then again, it may not tickle the system in the "right way"... The fact that safe mode starts kinda means that Windows (or a driver/program) is tickling the right way... In order to find the fault, I would run the system with much less memory, swapping slots once in a while. You should find one slot or stick that's bad. Remember that the memory test uses some memory, and that segment cannot be tested the same... So, swap around and repeat.

 

Else, there might be a cracked solder joint on the motherboard or a bad junction somewhere... You know, edge cases...

 

Martin

I'm a user, NOT a Lenovo employee. If my post helped, consider giving me a Kudos. If I solved your issue, please mark it as Solved.
P52 I7-8750H P1000 FHD 16GB 512GB-SSD 1TB-HDD
lenovop50_
Serial Port
Posts: 42
Registered: ‎09-22-2019
Location: FR
Views: 197
Message 32 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

I have no Nvidia menu under Ubuntu
The windows install is from Microsoft

 

I did Lenovos memory test in full, took 5 hours and passed successfully

The bad stock in the 32gb kit was instantly spotted as bad in the Lenovo test

lenovop50_
Serial Port
Posts: 42
Registered: ‎09-22-2019
Location: FR
Views: 192
Message 33 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

Alright so while installing Ubuntu I got this that flashed for half a second. 

 

 PSX_20191015_111538.jpg

 

Let's pause for a moment and appreciate verbose bootup 

They made windows 10 a mess really

 

 

 

Looking online I find this

 

https://bugs.freedesktop.org/show_bug.cgi?id=104835#c2

ve2mrx
802.11n
Posts: 157
Registered: ‎07-07-2019
Location: CA
Views: 166
Message 34 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

So, if I get it right, "nouveau" is the graphics driver? Same problem as you had in 1809 earlier?

 

Martin

I'm a user, NOT a Lenovo employee. If my post helped, consider giving me a Kudos. If I solved your issue, please mark it as Solved.
P52 I7-8750H P1000 FHD 16GB 512GB-SSD 1TB-HDD
lenovop50_
Serial Port
Posts: 42
Registered: ‎09-22-2019
Location: FR
Views: 164
Message 35 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

I think it is, reading what is said about it, this nouveau thing (for Linux) is outdated GPU drivers or other

 

What is strange is that installed Linux doesn't boot up with only the Samsung ram in, and I don't know why

 

I'm gonna try windows 7 now. If I can't get it to work I'll give up, get a refun for the ram and work around 16gb

rvcjew
802.11n
Posts: 327
Registered: ‎08-27-2013
Location: US
Views: 155
Message 36 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks


@lenovop50_ wrote:

Alright so while installing Ubuntu I got this that flashed for half a second. 

 

 PSX_20191015_111538.jpg

 

Let's pause for a moment and appreciate verbose bootup 

They made windows 10 a mess really

 

 

 

Looking online I find this

 

https://bugs.freedesktop.org/show_bug.cgi?id=104835#c2


You can do verbose. It's not as nice though. Might be worth it though. Did you try the stuff I mentioned for windows?

https://superuser.com/questions/1006850/how-to-boot-in-verbose-boot-for-windows-10

 

Malcolm 

I own a Y510p SLI (retired), Yoga 2 Pro, X220T, P50 4K (sold), X1C5
lenovop50_
Serial Port
Posts: 42
Registered: ‎09-22-2019
Location: FR
Views: 149
Message 37 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

I did and it still crashed during windows load

I'll turn on verbose see what it say

lenovop50_
Serial Port
Posts: 42
Registered: ‎09-22-2019
Location: FR
Views: 136
Message 38 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

Alright I was able to install xubuntu and I can boot with all 4 sticks no problem. I'd like to run tests all night with xubuntu booted and see if anything happen

IMG_20191016_014502.jpg

 

 

I ran mprime all night no problem

 

 

lenovop50_
Serial Port
Posts: 42
Registered: ‎09-22-2019
Location: FR
Views: 85
Message 39 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

Any idea about this? I can play games just fine with the M2000M, so i have no idea where the issue is

ve2mrx
802.11n
Posts: 157
Registered: ‎07-07-2019
Location: CA
Views: 72
Message 40 of 52

Re: Lenovo ThinkPad p50 no boot with 4 ram sticks

TBH, I'm puzzled.

I suspect something in Windows, but I don't know what.

 

Maybe you can find clues in the Windows Event Viewer? Or try a boot log? I know it was F8 while starting Windows 7 in the past, but I'm new to this '10 stuff ;-)

 

Martin

I'm a user, NOT a Lenovo employee. If my post helped, consider giving me a Kudos. If I solved your issue, please mark it as Solved.
P52 I7-8750H P1000 FHD 16GB 512GB-SSD 1TB-HDD

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